Mold for forming steps



May 19, 1925. 1,538,604

C. A. THRASHER ET AL MOLD FOR FORMING STEPS Fild'Sept. 18, 1924 Hll O/OHum? omen STATES r rENrorricr.

CHARLES AUSTIN THE-ASHER, or Wononstrsn, ivrn-ssnorr'osnrrs, oftnnnnonRAZDIQUS OWEN, GREENVII/LE, soUrr-r oenomns.

More FOR; romaine s'rn'rs.

Application filed September or South Carolina, have invented certain newand useful Improvements in Molds for Forming Steps, of which thefollowing is a spe-cilicatioii.

This invention relates to inolds tor forming steps and has for itsobject the provision of a device which is of such knocl'cdownconstruction that the same may be readily assembled or disasseinl'iledwhendesired.

A further objector the ii'iven'tion is the provision or device which issiinple in construction with the parts being so formed that they may bereadily coordinated and placed in operative position to provide a moldwher by any length of concrete may lie-readily provided.

lhis. invention will be best understood from a consideration of thetollowing detaileddescription, in view of the accompanying drainingforming a partot the specifiation; nevertheless it is to, be understoodthat the invention is not confined to the disclosure, being susceptibleof such changes and modifications which shall define no materialdeparture from the salient features of the invention as expressed in theappended claims. I

Illn the drawing:

Figure 1 is a view in perspective of an assembled mold for formingconcrete steps.

Figure 2 is a side view of the same.

Figure 3 is a transverse vertical section of the mold taken along theline 33 of Figure 2. j

Referring more particularly to the drawings side plates 1 are providedhaving up per and lower horizontalflanges 2 and The flanges b areprovided with perforations at adapted to aline with pertliorations intherear end portion 5- ot the horizontal flange 2 and adapted to receivebolts 6 for locking the rear portion 5 of theflange 2 to a flange 3. oia superimposedside plate 1. hose plates are placed in vertical aline-Inent but as shown in Figures 1 and 2 are offset from each other.

The forward ends of the side plates 1 have 12 1924. Serial No. 738,490..

a straight vertical section 7 and a forward extension 8. Spaced cleatsor lugs 9 and 10 are riveted to the outer surface of the side plates- 1and project :lorwardly'as shown at 11 beyond the vertical edges o'f saidside lates The projections 11 of the cleats are perforated thi oughwhichare passed pins 12 en gaging the outer :tace of a riser plate 13 wherebysaid plates are locked to the tor- Ward ends of the side plates. Theriser plate near its upper end is bent outwardly as shown atv 14;, andthen upwardly at .15,

to conform to the shape of the projection 8 off the side plates 1'.llhis formation provides for the projecting end of the tread oi thesteps after the forming of the steps in theconcrete inolds. 1 fl Theriser plates are pro'i' ided with perto rat-ions to receive theprojecting ends 11 of the cleats 9 and 10.; Pins 12 having a chain 16connected thereto, the otherend of the chain being co'niiected to a pin17 adapted to be inserted Within a perforation in the horizontal flanges2 of the side plates to preventless o f thepin from the side plates.

Beneath the otls'et' portion 14 of the riser 13 is secured areii'iforcing angle iron18.-

In assembling the device it is only neces sary to position the sideplates 1 and position the riser plate 13 so that the projecting ends ofthe cleats are insertedthrough the openings in the said riser plates.The pins 121arethen inserted through the perforations in the cleats 9and 10 whereby the riser plate is locked to the forwardend of "the sideplates. In View of the perforation on the flanges 2 and 3 of the sideplates the position of the superimposed side plates are readilydetermined when these perforations are alined. Bolts 6 are insertedthrough the perforations for locking the superimposed side plates 1tothe lower side plates. The corresponding riser plate 13 is locked tothe forward ends of the side plates as has been explained. Any number ofthesections of the side plates and riser plates can be superimposed uponeach other until the required number have been assembled for thepurpose.

hat we claim is: I

1. A mold for forming steps comprising pairs of spaced side plateshaving horizontal flanges at their upper and lower ends lugs projectingforwardly of said side membe s, riser plat s providcdwith p o ationsadapted to receive said lugs, means cooperating with said lugs forlocking the riser.

plates to the outer ends; of the side plates, said riser plates havingan offset portion adjacent their upper ends, the forward ends of theside plates having projections adapted to fit into the offset portionsof the riser plates, the flanges of the side plates at one riser beingadapted to be bolted to the flanges ofadjacent side plates at differenthorizontal levels.

2. A mold for forming steps comprising pairs of spaced side plateshaving horizontal flanges at their upper and lower ends,

lugs projecting forwardly of said side members, riser plates providedwith perforations adapted to receive said lugs, and meanscooperatingwith the lugs for looking the riser plates to the-outer endsof the side plates, said side platesbeing sheared off at an angle attheir rear free :edges whereby the lower ends of the plates are of lesslength than their upper edges.

3. A mold forforming steps comprising pairs of spaced side plates havinghorizontal flanges at their upper and lower ends, lugs projectingforwardly of said side members, riser plates provided with perforationsadapted to receive said lugs, said lugs being provided withperforations, and pins insertable through said perforationsandengageable with the riser plates for locking said plates to the outerends of the side plates, said riser plates having an offsetportionadjacent their upper ends, the forward ends of the side plates havingprojections adapted to fit into the offset portions of the riserplates,the flanges of the side plates at one riser being adapted to be boltedto the flanges of adjacent side plates at different horizontal levels.

4. A mold for forming steps comprising pairs of spaced sideplates havinghorizontal flanges at their upper and lower ends, lugs projectingforwardly of said side members, riser plates provided with perforationsadapted to receive said lugs, and

means for cooperating with the lugs for locking the riser plates to theouterends of the side plates, and an angle iron secured to the riserplates below'the perforation in saidqplate for reinforcing said plate,said sideplates being sheared off at an angle at their rear free edgeswhereby the lower endsof the plates are of less length than their upperedges;

5. A mold for forming steps comprising pairs of side plates having topand bottom flanges, the rear edge of the plates being inclined at anangle to the vertical, said flanges being provided with perforations,the perforations of the bottom flanges of a pair of superimposed sideplates being adapted to be alined with the perforations

